The beta-oxidation of palmitic acid occurs in the mitochondria, not in peroxisomes. Therefore, the correct answer is "d) Zero."

Explanation:
1. Beta-oxidation: Beta-oxidation is the process by which fatty acids are broken down in order to produce energy. It occurs in the mitochondria, specifically in the matrix of the mitochondria.
2. Palmitic acid: Palmitic acid is a 16-carbon saturated fatty acid. It is one of the most common fatty acids found in nature.
3. ATP generation: During beta-oxidation, fatty acids are broken down into acetyl-CoA units, which enter the citric acid cycle (also known as the Krebs cycle or TCA cycle). The citric acid cycle generates NADH and FADH2, which are then used in the electron transport chain to produce ATP.
4. Peroxisomes: Peroxisomes are organelles that are involved in various metabolic processes, including the breakdown of fatty acids. However, peroxisomes do not generate ATP through the citric acid cycle or the electron transport chain.
5. Role of peroxisomes: In peroxisomes, fatty acids are primarily oxidized through a process called alpha-oxidation, which occurs in the presence of oxygen but does not involve the citric acid cycle or the electron transport chain. Alpha-oxidation is important for the breakdown of certain fatty acids that cannot be metabolized through beta-oxidation.
6. ATP generation in peroxisomes: Since peroxisomes do not contain the necessary components (such as the citric acid cycle and the electron transport chain) for ATP generation, the beta-oxidation of palmitic acid in peroxisomes does not produce any ATP.
7. Location of beta-oxidation: Beta-oxidation occurs in the mitochondria, where the necessary enzymes and components for ATP generation are present.
Therefore, the correct answer is option 'D' - Zero.